To post a misleading link with a subject that promises to be exciting or interesting, e.g. "World of Starcraft in-game footage!" or "Paris Hilton blows Busta Rhymes' dick" but actually turns out to be the video for Rick Astley's debut single, "Never Gonna Give You Up". A variant on the duckroll. Allegedly hilarious.

...so instead of getting to beat off to footage of Ann Coulter getting raped by hyenas, I got rickrolled. What a day!

To send someone a link to 80s pop star Rick Astley's "Never Gonna Give You Up" video, making them believe that they're gonna see something completely different. The meme originated in 4chan's /v/ (videogame) board, when the official "Grand Theft Auto: San Andreas" trailer was coming out on the game's website but couldn't be watched due to heavy traffic. Playing a prank on everyone who was reading, an anonymous 4chaner said that the trailer was on YouTube and posted a link to Astley's song. Since then, the Rick Roll has been made countless times, not only on 4chan but on the whole of the Internet.

Matt: You gotta check out this new band, it's awesome! Look, here's the video.

We're no strangers to love
You know the rules and so do I
A full commitment's what I'm thinking of
You wouldn't get this from any other guy
I just wanna tell you how I'm feeling
Gotta make you understand
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
We've know each other for so long
Your heart's been aching
But you're too shy to say it
Inside we both know what's been going on
We know the game and we're gonna play it
And if you ask me how I'm feeling
Don't tell me you're too blind to see
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
Give you up, give you up
Give you up, give you up
Never gonna give,
Never gonna give, give you up
Never gonna give,
Never gonna give, give you up
Never gonna give,
Never gonna give, give you up
Never gonna give,
Never gonna give, give you up
I just wanna tell you how I'm feeling
Gotta make you understand
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you